1/*
2 * Copyright (c) 1998 Todd C. Miller <[email protected]>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#include "compiler.h"
18
19/*
20 * Copy src to string dst of size siz. At most siz-1 characters
21 * will be copied. Always NUL terminates (unless siz == 0).
22 * Returns strlen(src); if retval >= siz, truncation occurred.
23 */
24#ifndef HAVE_STRLCPY
25
26size_t strlcpy(char *dst, const char *src, size_t siz)
27{
28 char *d = dst;
29 const char *s = src;
30 size_t n = siz;
31
32 /* Copy as many bytes as will fit */
33 if (n != 0) {
34 while (--n != 0) {
35 if ((*d++ = *s++) == '\0')
36 break;
37 }
38 }
39
40 /* Not enough room in dst, add NUL and traverse rest of src */
41 if (n == 0) {
42 if (siz != 0)
43 *d = '\0'; /* NUL-terminate dst */
44 while (*s++)
45 ;
46 }
47
48 return(s - src - 1); /* count does not include NUL */
49}
50
51#endif
52